Roaring teeth:
There is no need to mark the screw distance, such as M8, M12-6H, M16-7H, etc., mainly used for connected threads. And the self-localized nature is mainly. The advantage is that disassembly is practical, and the standard parts with it are complete and easy to exchange.
Fine teeth:
It must be marked to show the difference between the thick thread. With insufficient resistance, internal parts limited by space and high blocking requirements.
The thick resistance is high and the fine seal is good. The same level guarantees that the load is not large (slightly high in thin teeth). The anti-losses of fine teeth thread does not take anti-location measures than thick teeth.
During adjustments, threads of fine teeth have more advantages. Disadvantages of fine teeth wires: it is not suitable for application on materials with too large fabric and poor resistance.
In real applications, thick dental threads are generally used and there are fewer threads of thin teeth.
Fine teeth are generally used in two cases:
The first is the place where it is necessary for self-packaging, such as bolts and screws on the transmission of the car, and use fine teeth to avoid relaxation due to vibration.
The second is to use it in thin walls, because the “height of the teeth” of the thin teeth wire is shorter than the ordinary wire. There is also a small dental wire guide for the fine price.
In general, the thick dental wire is higher than that of the fine teeth, so it is widely used. However, it also has a disadvantage, that is to say that self-logging is relatively worse than that of the thin dental wire, so that the spring cushion or other self-packaging devices must be installed in a strong place of vibration.
Fine teeth threads are generally not used for major constraint works. It is characterized by the size of the outside diameter of the nut which it can be relatively small as the standard wire. The drawback of fine teeth is that the wire is easy to bounce, affecting installation and disassembly, and the slight error can cause a vision and the nut to damage the screw and the nut at the same time.
It is determined if the wire is thick or thin teeth.
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